Internal Medicine in Lake Forest, Illinois
Data updated monthly · Last refresh September 2026
25 Internal Medicine providers practice in Lake Forest, and 32% received drug or device company payments in 2025. Listings are drawn from federal public records and are not endorsements.
Internal Medicine providers in Lake Forest
Listed alphabetically. Payment figures come from the federal Open Payments program, which requires drug and device companies to report what they pay physicians for consulting, speaking, meals, travel and royalties. A disclosed payment is a financial relationship, not evidence of wrongdoing, and many totals reflect a single meal. Figures cover calendar year 2025.
Dr. Amar Peruri, MDLake Forest, IL · No drug or device payments recorded (2025) ·
(847) 688-1900 Dr. Barry Levin, M.D.Lake Forest, IL · No drug or device payments recorded (2025) ·
(224) 516-4108 Dr. Corrina Smith, MDLake Forest, IL · No drug or device payments recorded (2025) ·
(847) 234-5600 Dr. Cristina Anez De Gomez, MDLake Forest, IL · No drug or device payments recorded (2025) · Telehealth ·
(847) 535-7157 Dr. David Vigder, MDLake Forest, IL · $15 in drug and device payments (2025) ·
(847) 615-2227 Dr. Elisabeth Cormier, MDLake Forest, IL · $159 in drug and device payments (2025) ·
(847) 998-0862 Dr. Gary Schaffel, M.D.Lake Forest, IL · $313 in drug and device payments (2025) ·
(847) 234-8100 Dr. Han Chung NgLake Forest, IL · No drug or device payments recorded (2025) ·
(847) 234-6063 Dr. Jason Garti, M.D.Lake Forest, IL · $50 in drug and device payments (2025) ·
(847) 234-8866 Dr. Jennifer Dimond, MDLake Forest, IL · No drug or device payments recorded (2025) ·
(847) 234-8866 Dr. Kurt Brotherson, MDLake Forest, IL · No drug or device payments recorded (2025) ·
(847) 482-0136 Dr. Marissa Versalle, DOLake Forest, IL · $24 in drug and device payments (2025) ·
(847) 861-0025 Dr. Mark Rudberg, MD MPHLake Forest, IL · No drug or device payments recorded (2025) ·
(847) 234-6363 Dr. Michael Kolozsvary-kiss, M.D.Lake Forest, IL · No drug or device payments recorded (2025) ·
(561) 768-3044 Dr. Michael Sommerfeld, MDLake Forest, IL · $50 in drug and device payments (2025) · Telehealth ·
(224) 516-4108 Dr. Mohammed Siddique, M.D.Lake Forest, IL · No drug or device payments recorded (2025) ·
(847) 234-2197 Dr. Richard Siebert, M.D.Lake Forest, IL · No drug or device payments recorded (2025) ·
(847) 234-8808 Dr. Roopal Thakkar, M.D.Lake Forest, IL · No drug or device payments recorded (2025) ·
(847) 505-6150 Dr. Sam Hull, MDLake Forest, IL · No drug or device payments recorded (2025) ·
(847) 295-5729 Dr. Scott Braunlich, M.D.Lake Forest, IL · No drug or device payments recorded (2025) ·
(847) 234-8866 Dr. Sean Connolly, M.D.Lake Forest, IL · $102 in drug and device payments (2025) ·
(847) 234-5600 Dr. Seema Bhatia, M.D.Lake Forest, IL · No drug or device payments recorded (2025) ·
(847) 910-0298 Dr. Steven Lasin, MDLake Forest, IL · $336 in drug and device payments (2025) ·
(847) 234-8100 Dr. Vivian SalazarLake Forest, IL · No drug or device payments recorded (2025) · Telehealth ·
(847) 234-8866 Dr. William Seiden, MDLake Forest, IL · No drug or device payments recorded (2025) · Telehealth ·
(608) 242-6850 Conditions Internal Medicine providers in Lake Forest, Illinois commonly treat
Patients often search by condition rather than specialty. These are conditions typically managed by Internal Medicine providers. Individual practices vary, so confirm with the provider before booking.
- High blood pressure
- Type 2 diabetes
- High cholesterol
- Preventive care
- Chronic disease management
Common questions
How many Internal Medicine providers are in Lake Forest, Illinois?There are 25 Internal Medicine providers with active NPI records practicing in Lake Forest, according to federal NPPES data refreshed monthly.
How many Internal Medicine providers in Lake Forest received drug or device company payments?8 of 25 (32%) received at least one payment from a drug or device company in 2025, according to the federal Open Payments program.
What conditions do Internal Medicine providers in Lake Forest treat?Internal Medicine providers in Lake Forest commonly treat high blood pressure, type 2 diabetes, high cholesterol, preventive care, chronic disease management and related conditions. Individual practices vary, so confirm with the provider before booking.
Where does this data come from?Provider records come from the federal NPPES registry and CMS Doctors and Clinicians files. Payment figures come from the CMS Open Payments program for calendar year 2025. The directory refreshes monthly.
All specialties in Lake Forest Internal Medicine across Illinois